Gold and silver thread, English name: gold and silver thread yarn, gold and silver thread fabric English name: lurex gold and silver thread jacquard fabric: metal jacquard fabric Metal thread, commonly known as "gold and silver thread, gold and silver thread", is woven with decorative thread made by chemical method. Because it is mainly composed of gold and silver, it is named. "Thread" is a conventional name, but it is actually a piece of silk. In ancient times, gold and silver thread was made into thin foil by hand, mounted on thin sheepskin or paper, and then cut into filaments, which was called "flat gold and silver thread". It is expensive, thick and hard, and easy to wear and change color. The common varieties of modern gold and silver thread are made of polyester film through Lifa in vacuum. It originated in the United States in the early 1950s, and industrial production began to take shape in China in the 1970s. The advantages of this kind of gold and silver thread now are: thin, soft, light, bright in color and low in price. Mainly include: 1, polyester gold and silver thread, plum after single-layer polyester film vacuum crossing, coated with resin protective film for fabric dyeing; 2. Composite gold and silver thread, made of two layers of polyester film and one layer of lithium foil, is mostly used for fabrics to be dyed; 3. There are also round gold and silver threads, which are mostly used for theatrical stage costumes, and now clothes (fashion). 4. In addition, there is "rainbow color-changing gold and silver" suitable for brightly colored fabrics, especially decorative fabrics.